EP3293219A1 - Masse de mortier bicomposant et son utilisation - Google Patents

Masse de mortier bicomposant et son utilisation Download PDF

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Publication number
EP3293219A1
EP3293219A1 EP16188281.6A EP16188281A EP3293219A1 EP 3293219 A1 EP3293219 A1 EP 3293219A1 EP 16188281 A EP16188281 A EP 16188281A EP 3293219 A1 EP3293219 A1 EP 3293219A1
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EP
European Patent Office
Prior art keywords
component
mortar composition
composition according
resin
group
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP16188281.6A
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German (de)
English (en)
Inventor
Mesut Cakmak
Memet-Emin Kumru
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hilti AG
Original Assignee
Hilti AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hilti AG filed Critical Hilti AG
Priority to EP16188281.6A priority Critical patent/EP3293219A1/fr
Publication of EP3293219A1 publication Critical patent/EP3293219A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
    • C04B26/02—Macromolecular compounds
    • C04B26/10—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B26/14—Polyepoxides
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/06—Aluminous cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00715—Uses not provided for elsewhere in C04B2111/00 for fixing bolts or the like

Definitions

  • the present invention relates to a two-component mortar composition having at least one resin component (A) containing at least one addition-reaction-polymerizable epoxy-based resin as the curable component and a curing agent component (B) containing a curing agent for the resin of the resin component (A).
  • the invention further relates to the use of the mortar composition for chemical attachment of components such as anchoring threaded rods, reinforcing rods, threaded sleeves and screws in boreholes, which are introduced into a mineral substrate.
  • the boreholes are first drilled for receiving the components to be fastened with the appropriate dimensions in the mineral substrate.
  • the boreholes are then freed from drilling dust and the bicomponent grout is introduced into the borehole after mixing the resin component with the hardener component.
  • the component to be fastened is introduced and adjusted in the hole filled with the mortar mass. After curing of the mortar composition by reacting the resin component with the hardener component a firm grip of the component is achieved in the mineral substrate.
  • the load-bearing behavior of the components thus fastened depends on several influencing factors, which are usually classified as internal and external variables.
  • Internal factors include the chemical composition of the mortar composition, its manufacturing process and the packaging of the mortar composition, which typically comprises components present in two separate containers.
  • the external influencing factors include, among other things, the type of drill hole cleaning, the quality of the mineral substrate, for example the concrete, its moisture and its temperature and the type of well production.
  • the WO 2011/113533 A1 relates to a fastener mortar system for grouting anchorages based on one or more epoxy-based curing reactive resins in holes or columns containing one or more silanes, the reactive groups capable of participating in the polymerization with the epoxy-based reactive resin and, in any case, silicon-bonded having hydrolyzable groups.
  • silicon-bonded hydrolyzable groups in the one or more silanes halogen, ketoximate, amino, aminoxy, mercapto, acyloxy, aryloxy, aralkyloxy and in particular alkyloxy groups are used.
  • the DE 10 2015 109 125 A1 relates to a curing agent composition for an addition polymerization curable synthetic mortar system for grouting anchoring agents in holes or columns, wherein the hardener composition includes oligomeric siloxanes having on average at least one organic residue per molecule.
  • the organic radical bears one or more secondary and / or primary amino and / or thiol groups which are reactive in the addition reaction with isocyanate or epoxy groups.
  • the siloxanes still contain one or more hydrolyzable, silicon-bonded groups.
  • the Hardener composition may also include one or more other common additives.
  • the invention further relates to the use of the composition for chemical attachment of components such as anchoring threaded rods, reinforcing rods, threaded sleeves and screws in boreholes, which are present in mineral substrate, preferably concrete.
  • the additives according to the invention make the use of silanes or siloxanes with silicon-bonded hydrolyzable radicals superfluous or can completely or partially replace the known hydrolyzable silanes and siloxane oligomers. This surprisingly leads to a good and rapid curing of the chemical mortar also at the interface, despite the absence of silicon-bonded substituted radicals.
  • the two-component mortar compositions according to the invention contain no silane or siloxane compound having hydrolyzable groups.
  • the ligand L may be selected from the group consisting of acetoacetate, alkyl, halide, phosphate, pyrophosphate, phosphite, sulfate, sulfite, CN, cyclopentadienyl and pentamethylcyclopentadienyl, ethers such as tetrahydrofuran, pyridine and morpholine.
  • phosphate, pyrophosphate, phosphite, sulfate and sulfite also include their esters and half-esters with alcohols, in particular alkoxy compounds having 1 to 24 carbon atoms.
  • X is an alkoxy or acyloxy radical selected from the group consisting of -O-CH 3 , -OC 2 H 5 , -OC 3 H 7 , -OC 4 H 9 , -OC 5 H 11 , -O- (CO ) -CH 3 , -O- (CO) -C 2 H 5 , -O- (CO) -C 3 H 7 , -O- (CO) -C 4 H 9, and -O- (CO) -C 5 H 11 existing group, preferably from the group consisting of -O-CH 3 , -OC 2 H 5 , -OC 3 H 7 and -OC 4 H 9 , existing group.
  • the radical X may be the same or different. In a preferred embodiment of the invention, X is the same.
  • n p.
  • the additive is selected from trimethyl phosphate, triethyl phosphate, triethyl borate, triisopropyl borate, tributyl borate, triethylaluminate, tetraethyl titanate, tetraisopropyl titanate, tetraethyl zirconate, tetrabutyl zirconate, tris (isooctadecanoato-o) (propane-2-olato) titanate (CAS No .: 61417-49-0), isopropyl dimethacryloyl isostearyoyl titanate (CAS No .: 61548-33-2), tris (dodecylbenzenesulfonate) isopropoxide titanate (CAS No .: 61417-55-8), isopropyl tri (dioctylphosphato) titanate (CAS No.
  • trimethacrylate methoxyethoxyethoxide titanate (CAS No .: 61436-48-4), isopropyltritanium tri (dioctylpyrophosphate) (CAS No .: 68585-78-4), isopropyl triacryloyl titanate (CAS No .: 61436 -49-5), bis (2 - ((2-aminoethyl) amino) ethanolato) (2 - ((2-aminoethyl) amino) ethanolato-O) (propan-2-olato) titanate (CAS No .: 65380- 84-9), tetraisopropoxytitanium (CAS No .: 68585-67-1), tetraoctyl-di (ditridecylphosphite) titanate (CAS No .: 68585-68-2), tetra (2,2-diallyloxymethyl-1-butyl) to (
  • Such as complex additives are isopropyl tri (dioctyl pyrophosphate) titanate or tetraoctyl titanate bis (di-tridecyl phosphite), which are obtainable inter alia from Kenrich-Chemicals Inc.
  • a "two-component mortar composition” is understood to mean a mortar composition which consists of a curable resin component and a Hardener component for the resin component, wherein the resin component and the hardener component are stored separately, so that during storage, no reaction of the hardener component takes place with the resin component.
  • the hardener component By mixing the hardener component with the reactive resin immediately prior to the application of the mortar composition, the curing of the reactive resin is started.
  • the additive is present in the resin component.
  • the quantities given below for the two-component mortar composition are by weight relative to 100 percent by weight of the sum of the individual components (total weight of the mortar composition), but without the additive.
  • the two-component mortar composition without the additive thus gives 100 wt .-%.
  • the additive according to the invention can be present individually or else as a mixture of additives.
  • the at least one additive of the formula I is present in a proportion of 0.01 to 10 wt .-%, more preferably in a proportion of 0.01 to 5 wt .-%, even more preferably in a proportion of 0.1 to 5 wt .-% and particularly preferably in a proportion of 0.1 to 3 wt .-%, based on the total weight of the mortar composition of the components (A) and (B).
  • the epoxy-based resin component contained in the two-component mortar systems according to the invention comprises at least one epoxide component, preferably based on glycidyl compounds, for example those having an average glycidyl group functionality of 1.5 or greater, in particular 2 or greater, eg 2 to 10.
  • the epoxy component may optionally further Glycidyl ethers as reactive diluents include.
  • the epoxy resins of the epoxy component are preferably polyglycidyl ethers of a at least dihydric alcohol or phenol, such as novolak, bisphenol F or bisphenol A, or mixtures of such epoxides, which may be obtained, for example, by reacting the corresponding polyhydric alcohols with epichlorohydrin.
  • Suitable examples are hexanediol diglycidyl ethers, trimethylolpropane triglycidyl ethers, novolak epoxy resins, bisphenol A-epichlorohydrin resins and / or bisphenol F-epichlorohydrin resins, for example having an average molecular weight of M n ⁇ 2000 g / mol.
  • the epoxy resins may, for example, have an epoxide equivalent of 120 to 2000, preferably 150 to 400, in particular 155 to 195, for example 165 to 185.
  • epoxy compounds such as trimethylolpropane triglycidyl ether or hexanediol diglycidyl ether, which have lower viscosity than epoxides containing aromatic groups can also be used as reactive thinners.
  • the proportion of the epoxy component in the total mass of the two-component system is preferably 5 to 90 wt .-%, in particular 20 to 80 wt .-%, 30 to 70 wt .-% or 40 to 60 wt .-%. Also possible are mixtures of two or more epoxy components. Suitable epoxy resins, reactive diluents and hardeners are also in the standard work of Michael Dornbusch, Ulrich Christ and Rob Rasing, "Epoxy Resins", Vincentz Network GmbH & Co KG (2015), ISBN 13: 9783866308770 , to find. These compounds are incorporated herein by reference.
  • Examples of other constituents of the resin component (A) are accelerators, thixotropic agents, fillers and other additives and mixtures thereof.
  • accelerators for example, tertiary amines, imidazoles or tertiary aminophenols such as tris-2,4,6-dimethylaminomethylphenol, organophosphines, Lewis bases or acids such as phosphoric acid esters, or mixtures of two or more thereof may be used.
  • the accelerators may be included in one or both components, preferably in the hardener component (B).
  • the accelerators are preferably contained in the hardener component in a proportion by weight of 0.001 to 15% by weight.
  • the two-component mortar composition in the resin component (A) and / or in the hardener component (B) contains at least one thixotropic agent.
  • Thixotropic agents which can be used are customary rheology aids, such as precipitated or fumed silica, bentonites, celluloses and / or kaolin.
  • the thixotropic agents may e.g. in a proportion by weight of 0.5 to 30 wt .-% are added, preferably from 2 to 20 wt .-%, based on the total weight of the mortar composition.
  • the two-component mortar composition according to the invention in the resin component (A) and / or in the hardener component (B) may contain at least one inorganic filler.
  • Cements such as Portland cement or alumina cement and other hydraulically setting inorganic substances, quartz, glass, corundum, porcelain, stoneware, barite,chtspat, gypsum, talc and / or chalk and mixtures thereof serve as fillers in particular.
  • the inorganic fillers may be added in the form of sands, flours or shaped articles, preferably in the form of fibers or spheres.
  • the fillers may be present in one or both components of the two-component system.
  • the proportion of fillers is preferably 0 to 90 wt .-%, for example 10 to 90 wt .-%, preferably 15 to 75 wt .-% and more preferably 20 to 50 wt .-%, based on the total weight of the mortar composition.
  • additives may also be added, such as plasticizers, non-reactive diluents, flexibilizers, stabilizers, rheology aids, wetting agents, coloring additives, such as dyes or pigments, for example, for different coloration of the components to better control the mixing, and mixtures of said additives.
  • Such other additives may preferably be added in proportions by weight of a total of 0 to 40%, based on the total weight of the mortar composition.
  • the curing agent of the hardener component (B) comprises at least one compound customary for epoxy curing.
  • the epoxy-curing compounds which serve as polyaddition reactants are, in particular, compounds having two or more functional groups selected from the group consisting of amino, imino, and mercapto and combinations thereof are selected. Suitable examples are amines, thiols, aminothiols and mixtures thereof, for example as mentioned in Michael Dornbusch, Ulrich Christ and Rob Rasing, "Epoxidharze”, Vincentz Network GmbH & Co. KG (2015), which is incorporated herein by reference.
  • Particularly preferred curing agents are the di- or polyamines and / or di- or polythiols mentioned therein. It is also possible to use or include mixtures of two or more of the compounds known for epoxy curing.
  • the compounds customary for epoxy curing are preferably present in amounts of up to 50% by weight, preferably from 5 to 30% by weight, in particular 10 to 20% by weight, based on the total mass of the two-component mortar system.
  • the proportion of the curing agent can be from 1 to 100% by weight, for example from 3 to 95% by weight, preferably from 4 to 95% by weight, more preferably from 5 to 90% by weight. -%, and more preferably 10 to 80 wt .-%.
  • constituents of the hardener component (B) of the two-component system according to the invention may comprise organic solvents such as benzyl alcohol, fillers such as the fillers mentioned above for the resin component (A) and further of the abovementioned additives.
  • the two-component mortar composition according to the invention is preferably in cartridges, cartridges or foil bags, which are characterized in that they comprise two or more separate chambers, in which the resin component (A) and the hardener component (B) of the mortar composition reaction-inhibiting separated from each other ,
  • the at least one additive of the formula I is preferably added in an amount of from 0.1 to 10% by weight, based on 100% by weight, of the sum of the components A + B.
  • the resin component (A) and the hardener component (B) are emptied from the separate chambers and mixed in a suitable device, for example a static mixer or a dissolver.
  • a suitable device for example a static mixer or a dissolver.
  • the mixture of resin component (A) and hardener component (B) is then introduced by means of a known injection device into the previously cleaned wellbore. Subsequently, the component to be fixed is inserted and adjusted in the mortar composition.
  • the curing agent of the hardener component (B) reacts with the epoxides of the resin component (A) with polyaddition, so that the mortar composition cures under ambient conditions within a few hours.
  • the two-component mortar composition according to the invention exhibits improved adhesion, in particular to moist concrete.
  • high load values are achieved even in damp boreholes and / or poorly cleaned wells drilled into the mineral subsoil. It has surprisingly been found that the improved adhesion and increased load values can also be achieved without the use of hydrolyzable silanes or siloxane oligomers.
  • the invention is therefore also the use of the two-component mortar composition according to the invention for the chemical attachment of components, in particular Ankergewindestangen, rebar, threaded sleeves and screws, in boreholes, which are present in a mineral substrate, preferably concrete.
  • epoxy resin a composition commercially available under the name Araldite BY 20157 (Huntsman Advanced Materials) was used in Examples 1 to 30.
  • the amine curing agent is available under the name Aradur 30446 from Huntsman Advanced Materials.
  • the resin component (A) is first prepared by mixing the ingredients mentioned above, the ingredients are first pre-agitated by hand and then in a speed mixer for 10 seconds at 1000 rev / min, then for 20 seconds at 2500 rev / min and then 15 seconds long at 1500rpm.
  • the above ingredients are mixed together, stirred by hand and then blended in the speed mixer for 10 seconds at 1000 rpm, then for 20 seconds at 2500 rpm and then for 15 seconds at 1500 rpm.
  • the resin component (A) and the hardener component (B) are combined in the calculated ratio, stirred by hand and then mixed in the speed mixer for 10 seconds at 1500 rpm.
  • the mixing ratio of the components (A) and (B) in Examples 1 to 30 was about 3: 1 (w / w).
  • the additive according to formula I is added to the resin component (A) in an amount such that the mass fraction mentioned in the following tables results, based on the total weight of the mixed components (A) and (B).
  • the substrate used was diamond-sawn concrete C20 / 25, wet and dry. Round metal plates with a ring of double-sided adhesive tape as spacers are mounted on the substrate to be bonded and filled with the mortar composition. After curing at room temperature (20 ° C), 1 day) the adhesion strength is measured with an adhesion tester (DYNA Z, manufacturer proceq).
  • Table 1 Peel Adhesion Test (Pull Off) example additive Diamond-sawn dry concrete [N / mm 2 ] Diamond-sawn wet concrete [N / mm 2 ] comparison - 3.90 0.90 1 0.3% KR 38S 3.53 2.25 2 0.3% KR 46B 3.41 2.16 3 0.8% TEP 4.28 1.17 4 0.8% TIB 4.20 2.28 5 0.8% TEB 3.89 2.83 6 0.8% Zr (OBu) 4 4.27 1.38 7 0.8% Zr (OEt) 4 3.89 2.01 8th 1.6% Al (OEt) 3 3.47 0.97 9 1.6% Ti (OEt) 4 4.28 1.01 10 1.6% Ti (OiPr) 4 3.93 1.24
  • the use of the additives according to formula I above improves the adhesive strength of the mortar compositions according to the invention on both dry and, in particular, water-saturated concrete.
  • the investigated drill holes were prepared using a diamond drill and the well was cleaned twice with compressed air (6 bar), brushed and then blown out twice with compressed air.
  • the wells were filled with water, after which the water was allowed to act for a day. Thereafter, the water was sucked off and the anchor rod was set using the mortar composition. The mortar composition was cured at room temperature (21 ⁇ 2 ° C) for 24 hours.
  • Table 2 Failure load in the pull-out test example additive C20 / 25-dry [N / mm2] C20 / 25-moist [N / mm2] C50 / 60-damp [N / mm2] comparison - 38.21 32.86 27.89 11 0.3% KR 38S 34.79 34.09 31.11 12 0.1% KR 38S 32.31 30.63 35.29 13 1.0% KR 38S 34.74 34.58 34.41 14 0.8% TEB 35.17 35,95 30.63 15 1.6% TEB 36.49 35.92 33.89 16 0.8% Zr (OEt) 4 32.16 34.77 32.17 example additive C50-damp ⁇ [N / mm2] comparison - 26.13 17 0.1% TBB 27.47 18 0.5% TBB 27.23 19 1.0% TBB 26.14 20 0.1% KR 38S 27.62 21 0.3% KR 38S 28.23 22 0.5% KR 38S 28

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Epoxy Resins (AREA)
EP16188281.6A 2016-09-12 2016-09-12 Masse de mortier bicomposant et son utilisation Withdrawn EP3293219A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP16188281.6A EP3293219A1 (fr) 2016-09-12 2016-09-12 Masse de mortier bicomposant et son utilisation

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Application Number Priority Date Filing Date Title
EP16188281.6A EP3293219A1 (fr) 2016-09-12 2016-09-12 Masse de mortier bicomposant et son utilisation

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EP3293219A1 true EP3293219A1 (fr) 2018-03-14

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112638840A (zh) * 2018-10-10 2021-04-09 喜利得股份公司 基于铝水泥的多组分无机锚固系统
CN115124959A (zh) * 2022-07-01 2022-09-30 可慧(河南)新材料科技有限公司 一种环氧树脂植筋胶
US11728768B2 (en) 2006-12-06 2023-08-15 Solaredge Technologies Ltd. Pairing of components in a direct current distributed power generation system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2364961A2 (fr) * 2010-02-24 2011-09-14 HILTI Aktiengesellschaft Masse de mortier à deux composants et son utilisation
WO2011113533A1 (fr) 2010-03-16 2011-09-22 Fischerwerke Gmbh & Co. Kg Mortier de scellement à base d'époxy contenant des additifs silane
DE102015109125A1 (de) 2014-07-04 2016-01-07 Fischerwerke Gmbh & Co. Kg Epoxidbasiertes Befestigungskunstmörtelsystem mit Siloxanoligomeren

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2364961A2 (fr) * 2010-02-24 2011-09-14 HILTI Aktiengesellschaft Masse de mortier à deux composants et son utilisation
WO2011113533A1 (fr) 2010-03-16 2011-09-22 Fischerwerke Gmbh & Co. Kg Mortier de scellement à base d'époxy contenant des additifs silane
DE102015109125A1 (de) 2014-07-04 2016-01-07 Fischerwerke Gmbh & Co. Kg Epoxidbasiertes Befestigungskunstmörtelsystem mit Siloxanoligomeren

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11728768B2 (en) 2006-12-06 2023-08-15 Solaredge Technologies Ltd. Pairing of components in a direct current distributed power generation system
CN112638840A (zh) * 2018-10-10 2021-04-09 喜利得股份公司 基于铝水泥的多组分无机锚固系统
CN115124959A (zh) * 2022-07-01 2022-09-30 可慧(河南)新材料科技有限公司 一种环氧树脂植筋胶

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